I used Mite Off since it was non-toxic. It worked, and you can apply it to the snake as well as tank, hide, etc.. It apparently won't hurt the water either, but I left that bowl out when misting. My snake was on aspen at the time. I moved him to a new container with paper towels, and poured scalding hot water and bleach into his old one so whatever was in there would be killed. It also cost quite a bit less than P.A.M.